Analysis

  • max time kernel
    4294178s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20220223-en
  • submitted
    01/03/2022, 18:14

General

  • Target
    fa42a439f4c2999f1b056e3ee061b4e64fc250125cfc59204112d07de3219832.exe
  • Size 274KB
  • Sample220301-wvg2hsbba2
  • SHA256 fa42a439f4c2999f1b056e3ee061b4e64fc250125cfc59204112d07de3219832
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • 44caliber

C2
  • https://discordapp.com/api/webhooks/943921740650807366/Qusx1YNKTBukFikBPU2oPXE3VgLnpp3XmWajMEfaOIUQ0SkEYDsXQCXM-s64Bb_sTQOY

Signatures

  • 44Caliber

    An open source infostealer written in C#.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\fa42a439f4c2999f1b056e3ee061b4e64fc250125cfc59204112d07de3219832.exe
    "C:\Users\Admin\AppData\Local\Temp\fa42a439f4c2999f1b056e3ee061b4e64fc250125cfc59204112d07de3219832.exe"
    1⤵
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    PID:1844

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1844-54-0x00000000010A0000-0x00000000010EA000-memory.dmp

        memory/1844-55-0x000007FEF5BA3000-0x000007FEF5BA4000-memory.dmp

        memory/1844-56-0x000000001B060000-0x000000001B062000-memory.dmp